Calorimetric investigations of liquid Ge-Te and Si-Te alloys

Autor(en): Schlieper, A
Blachnik, R
Stichwörter: calorimetric investigations; Chemistry; Chemistry, Physical; Ge-Te alloys; Materials Science; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; PB; Si-Te alloys; SN; TEMPERATURE; thermodynamics; TRANSITION
Erscheinungsdatum: 1996
Herausgeber: ELSEVIER SCIENCE SA LAUSANNE
Journal: JOURNAL OF ALLOYS AND COMPOUNDS
Volumen: 235
Ausgabe: 2
Startseite: 237
Seitenende: 243
Zusammenfassung: 
The heats of solution of Ge and Te in liquid Ge-Te alloys and of Si in liquid Si-Te alloys were determined in a heat flow calorimeter at different temperatures. The excess enthalpies were calculated from the measured heat effects. In addition the heats of formation of liquid Ge-Te alloys were measured at 1203 K. The associate model was used to describe the thermodynamic functions. Minima of the enthalpy curves in the Ge-Te and Si-Te systems at 1213 K were found at 57 mol.% Te and -11.2 kJ mol(-1) and at 62 mol.% Te and -22.3 kJ mol(-1) respectively. A temperature dependence of the excess enthalpies was only observed in the Ge-Te system below about 1093 K. The enthalpies of the Si-Te system exhibited an almost linear temperature dependence.
ISSN: 09258388
DOI: 10.1016/0925-8388(95)02032-2

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